Machine for chamfering heels of shoes



April 19, 1932. N. H. KNOWLTON 1,854,263

MACHINE FOR CHAMFERING HEELS OF SHOES Filed'June 12. 1930 2 Sheets-Sheet l B, Fig. 1. A 50 Wvmnm j dr r April 19, 1932. N. H. KNOWLTQN 3 MACHINE FOR CHAMFERJENG HEELS OF SHOES Filed June 12, 1930 2 Sheets-Sheet 2 Patented Apr. 19, 1932 7 NOEWOOD H. KNOWLTON, F E1()CKIOIt'l, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MAOHINERY CORPORATION, OF PATERSON NEVT JERSEY, A CORPORATION OF NEW JERSEY MACHINE FOR GHAIIFERING- HEELS OF SHOES I 7; Application filed June 12,

This invention relates to trimming machines and is illustrated ass-embodied in a machine designed to chamfer portions of the breasts of heels adjacent to heel-breast-re-- peiving channels formed in the breasts of the ieels.

In United States Letters Patent No. 1,704,204, granted March 5, 1929, on an application filed in the name of William HhNutt, 10 there are disclosed heels, the breasts of which are provided with relatively deep andnarrow grooves, channels or slots located near the breast edges of the heels and extending 7; parallel thereto. As described in the Letters 5 Patent referred to, these channels are formed for the purpose of receiving marginal portions of a cover applied to the rear and sides.

of a heel, and commonly referred to-as a r s1de cover, the forward portions of the 2.0 Slde cover belng lnturned upon the breast of the heel and being tucked into and secured within the channels. The channels are also designed to receive the marginal portions of a breast cover of a heel. which portionsare tucked into said channels alongside the tucked-in portions of the side cover. In a Louis heel in which the projecting portion'of the breast of the heel has a convexity of small 1i radius extending transversely of the heel, it is c the experience that a part of the projecting breastportlon of the heel along the inner breast edge of each of the channels appearsto bulge excessively when viewed from the side :1 and when the heel is covered as above explained, this bulge detracts from the appear ance of the finished heel breast which preferably should have the upper part of its breast curved uniformly transversely of the heel from one breast edge of the heel to the 40 other. In order to overcome the bulged appearance in the breast of the heel along portions of the channel, it issometimes customary to chamfer the lateral portions of the breast adjacent to and between the channels as described in application for United States Letters PatentSerial No. 4:60,?69, filed June 12, 1930, in my name.

It is an object of this invention to provide an effective and efficient machine for cham- SQ fering portions of a work piece along chan- 1930. Serial No; 460,770.

nels or slot-s formed in a face. of the work piece. The machine which is herein illustrated and constitutes a preferred embodi- I chamfering the breasts of Louis heels in the manner described in the above-mentioned application for United States Letters Patent Serial No. 460,7 69.

With the above-stated object in view, and in accordance with a feature of the invention, the illustrated machine comprises a cut ter for trimming or chamfering from a work piece material included between a face of the work piece and a channel or slot formed in the work piece and a gage having a surface for engaging the work piece within the channel, the illustrated gage being constructed and arranged to position the work piece relatively to the cutter during the trimming operation as well as being mounted for adjustment relatively to the cutter for varying the amount of material removed from the work piece during the trimming cut. The cutter in the illustrated machine is of the rotary type and in accordance with another feature of-the invention is arranged in overlapping relation with the gage axially of the cutter. Thus, the work piece is positioned relatively to the cutter in such a manner as to insure that material will be trimmed or chamfered from the work piece up to a side of the channel. I 7

To facilitate accurate and convenient presentation of heels to the cutter for chamfering the breasts of the heels along the heel-coverreceiving channels formed therein the illustrated gage above referred to is constructed Q and arranged to engage boththe breast of" the heel and a side wall of the channel, each of the heels being guided past the cutterto cause successive portions ofthe heel breast lengthwise of a channel to be chamfered. The illustrated ge just referred to is in the form of arcuate housing mounted for pivotal movement substantially in the plane of rot-ati on of the cutter which may have its cutting edges lying in a con1cal surface, and over-' 2 recess:

laps effective portions of the cutting edges of the cutter in order that the cutter will extend slightly over the channe-lwhen the gage engages a side wall of the channel, thus assuring that the chamfering of the heel will extend to the channel. In order to assist the abovementioned gage in guiding the heel past the cutter, the illustrated machine is also provided with a gage which is arranged axially of the cutter with relation to the iirst-named gage and is positioned an opposite side of the cutter from the first-named The second-named gage is formed and arranged to engage the breast of the heel during the trimming or chamfering operation to prevent the formation of a shoulder at the inner portion of the chamfer by the operator tipping the heel against the end portion of the cutter and may be mounted for ustment relatively to the first-named gage according to the shape of the breast of the heel being chainfered.

These and other features of the invention which are pointed out in the claims will best be understood from a consideration of the accompanying description of a preferred form of the invention illustrated in the drawings, in which Fig. 1 is a front view of the top portion of the illustrated machine and shows two trimming units designed to chamfer portions of the breast of a heel along channels formed in the breast of the heel adjacent to and parallel to the breast edges of the heel;

Fig. 2 is a perspective view of the right trimming unit illustrated in Fig. 1, a portion of which has been broken away to show an interior portion thereof;

Fig. 3 is an enlarged side view of a portion of the trimming unit shown in Fig. 2 illustrating the relative positions of a rotary cutter and heel-guiding instrumentalities as set up for chamfering a portion of the breast of the heel along a channel formed in the breast of the heel, the heel being partly broken away and being shown in the process of being chamfered Fig. 4; is a perspective view illustrating a heel, the breast of which has been channeled for receiving cover margins and the upper portions of the breast of which along the channel have been chamfered by the machine illustrated in Figs. 1 to 3;

Fig. 5 is a sectional view taken along the line V V of Fig. 4; after the heel illustrated in Fig. 4 has been covered; and

Fig. 61s a similar view to that illustrated in Fig. 5 but showing sectionalview of a covered heel, the upper portions of the breast of which have not been chamfered. I

In a cover heel construction such as illustrated in the above-identified Nutt patent, when the upper part of the breast of a heel 12 is convex widthwise thereof and has been covered with a side cover 14 and a breast Lin cover or flap 16, the inturned edge portions 18, respectively of which have been secured within grooves, channels or slots 22 extending along breast edges 28 of the heel, the portions 24: of the covered heel adjacent to the inner breast edges 26 of the channels 22 are often bulged as viewed from the side of the heel and detract somewhat from the appearance of the finished heel since it is desired that the breast of the covered heel shall have a smooth contour from one breast ecge 28 to the other. W hen a heel having chamfered portions 30 at the upper marginal portions of the portion of its breast and included between the heel-cover-receiving channels 22 is covered, the undesirable bulged portions 2% of the character above indicated are not present in the finished shoe, the breast of the heel between the breast edges 28 loing in the form of a substantially continuous smooth surface and having an attractive appearance.

The operating parts of the illustrated machine are supported by a bed plate 32 bolted to a standard 34;. In order that the operator may chamfer the opposite portions of the breast of a heel by cuts progressing toward the attaching face 36 of the heel. as he draws the heel toward him past a cutter 38, right and left units A, B respectively are provided for chamfering the upper portion of the breast 10 of the heel included between and extending along channels 22, in the left and right portions respectively of the breast of the heel. Since each of the units A and B is the same except in so far as its parts are reversed, it will be necessary to describe but one unit, the reader keeping in mind that the other unit has a similar but reversed corresponding part.

The cutter 38 which has the general shape of a prism of cone and has its cutting edge included in a conical surface is secured to one end of a shaft 40 mounted for rotation in a bearing housing 42 bolted to the bed plate 32 and having a pulley 4L4 mounted upon its other end. Power is supplied to the pulley 44 through a belt 46 and pulley 4-8 which are driven by a motor 50.

In order to support the mechanism for positioning the heel relatively to the cutter 38 and for guiding it past the same during the clamping operation, a sleeve 52 having a flanged portion 5 1- is screwed to the bearing housing 42, upon which sleeve 52 (Fig. 2) a collar 56 is mounted and secured thereto by a set screw 58 carried by the coll r 56 and having its end 60 adapted to engage the collar.

For positioning the heel 12 relatively to the cutter 38, the cutting edges 62 of which are illustrated as lying in the surface of a cone, the machine is provided with a gage or -..ousi .9 Gel having a gaging surface 66 for cngag' 1g the heel within the channel 22 and ner face 80 (Fig. 3)" of the channel 22.

havinganother gaging'surface 6'8 constructed and arranged to engage the breast of; the

heel near one of the breast edges 28. The gage 64 is pivotally supported at; one" end released to allow the gage 64 tO'bG adjusted about the pin'70 for varying the depthof the chamfering out in the breast of a heel,

and which may be tightened to secure the gage 64 in position relatively to the cutter 38'.

In order to cooperate with the screw 74' to efiect a fine adjustment of the gage 6'4 relatively to the cutter .38 by moving the gage.

64 while the screw 7 2 clamps the gage-under slight pressure, the collar 56' is constructedv and arranged to carry a screw 76 the lower end of which engages a surface '28 of the" gage 64; It will be noted that the collar 56 is so positioned relatively to the shaft 40 that the effective gaging surface 66 of the gage or housing 64 is substantially concentrically arrangedi'relatively to the cutter 38' and overlaps aportion of the cutter axially thereof, thus rendering a portion of the-cutter ineffective by including an effective cutting portion of the cutting edges 62 and assuringthat the breast of the heel will be cut up to the inln order to cooperate with the gage 64 in positioning the heel relatively to the cutter to perform the chamfering operation it may be desirable to provide the machine with a second gage 82 arranged in front of the cutter 38. The gages 64, 82 are thus arranged along the axis of and at opposite sides of the cutter 38, the gage 82 being generally positloned immediately in front of the cutter 38 as illustrated in Fig. 3 for engaging the breast of the heel and for cooperating with the surface 68 for correctly positioning the heel. relatively to thecutter in adirection at'right angles to the axis of rotation during a portion of the clamping operation, the position of the heel lengthwise of the axis of: the cutter he controlled by the contact of the inner sin ace of the channel 22 against the surface 66 of the 64-.

The gage 82 may beadjusted relatively to the cutter 38 in a path indicated by arrows84- through a screw 86 carried by an angular member 88 and having an annular recess 90 into which a flange portion 92 of the; gage 82 extends, the being fixedly positioned being released for movement in the. path 96' by a screw 100 in threaded relation with a slide 102 and passing through a slot 104 in the angular member 88 and being guided for movement in a rectilinear path upon the slide 102 through the tongue-and-groovearrangement 106. The slide 102'in.turn is guided for movement relatively to the cutter in thepath 98 lengthwise of the axis of the cutter along a guideway 108 in the collar 56, ad-

j ustinent of the slide 102 being effected by a screw 110 carried by the collar 56 and passing through a slot 112 in the guideway108,

It is customary to remove the collar 56 together with the gages 64, 82 as a unit from the sleeve preparatory to changing cutters.- This is effected by swlngmg the 64 t0' a lowered position about the pm 70, by release in g the screw 74, loosening the set screw 58 and then pulling the collar 56 ofi' the-sleeve 52. In order to assure the positioning of the collar 56 upon the sleeve 52 in the same posiv tion it occupied before being removed, the collar is provided with a slideway 114 for receiving a bifurcated carrier 116 having a threaded portion 118 extending therefrom. The carrier 116 is retained in the slideway 114 by a screw 120 carried by the collar 56 and passing through a slot 122 of the carrier. The threaded portion 118carries a knurled nut 126 constructed and arranged to engage within an annular channel 128 ofthe' collar 56. The end 130 of the threaded portion 118 of the carrier 116 is normally in en gagement with the face 1320f the flanged portion 54 of the sleeve 52 when the collar 56 is positioned upon the sleeve, the threaded portion 118 being moved relatively to the col.- lar 56 by releasing the screw 120 and turning the knurled nut 126. After the threaded portion 118 has been so positioned with relation to the collar 56 that its end 130 is in engagement with the face 132 when the gage 64 is in the desired position relatively tothecutter 38, the screw 120 is tightened thereby maintaining the fixed relation between the threaded portion 118 andthe collar 56. In order, therefore, to replace the collar 56 in its original position, it is merely necessary to slide the collar 56 upon the sleeve 52 until again to clamp the vcollar 56 to the'sleeve 52 by the set screw 58.

In order to perform the chamfering op eration, the operator presents the heel. 121a) the machine with the breast 10 thereof (Fig' 3) in engagement with a gage surface 68and with the inner (face 80 of the channel 22 in engagement with the gaging surface 66 of the gageor housing 64, the out starting at a point indicated by reference numeral 184, where the breast of the heel begins to change from a substantially plane surface to a sur-v face which is convex transversely of the the end 130 of the threaded portion 118 ofv the carrier 116 engages the face 132 and breast. As the heel is drawn toward the op erator and past the cutter 38 the gage 82 will engage the convex portion of the heel and will assist the gage 6 in properly posi ioning the heel relatively to the cutter during a substantial part of tie chamfering operation. Since the cutting edges 62 of the cutter 38 are arranged in a conical surface it will be clear that as the widthwise convexity of the portion of the heel breast adjacent to the channel 22 increases from point 13%- the width of the chamfering cut will also increase until the cutting edges are operating along their effective length to chamfer the breast of the heel. After one portion of the breast of the heel along the upper part of one of the channels 22 has been chamfered to the lip 136 of the attaching face 36 of the heel in one of the units, an opposite portion of the breast of the heel is chamfered in a similar manner along a corresponding portion of the other channel in the other chamfering unit.

The illustrated machine has been described with reference to its operation upon heels the breasts of which are convex widthwise thereof; the machine, however, may be used to chamfer the breasts of heels along channels of various shapes formed therein and is sometimes used, for example, to chamfer the breasts of Cuban heels along the inner edges of channels formed in the breasts of and extending heightwise of the heels. This con struction is utilized in heels in which the breast covers are considerably thicker than the side covers and which, without chamfer, are likely to have, when covered, a bulged appearance, such as above described, where the covers have been tucked into the channels.

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is 1. A trimming machine having, in combination, a cutter constructed and arranged to chamfer from a work piece material included between a face of the work piece and a slot formed in said face, and a gage having a face shaped for engaging the work piece within the slot, said gage being constructed and arranged to position the work piece relama to the cutter during h tfimming eration and being mounted. for adjustment relat1vely to the cutter for varying the amount of material removed from the work piece during the trimming operation.

in the slot, said gage being arranged to position the work piece relatively to the cutter during the trimming operation and being pivot-ally mounted for adjustment relatively to the cutter substantially in the plane of rotation of the cutter for varying the amount of the material removed from the work piece during the trimming operation.

3. A trimming machine having, in combi nation, a rotary cutter having a cutting edge constructed and arranged to trim portions of a work piece along a side of a slot formed in the work piece as the cutter and the work piece are moved relatively to each other, and a gage having a face shaped to engage a side of the slot, said face being positioned in axial overlapping relation with the cut ting edge of the cutter and being constructed and arranged to serve as a support against which the work piece may be rested upon said relative movement of the cutter and the work piece to insure that the work piece is trimmed up to the slot.

4. A trimming machine having, in combination, a rotary cutter shaped and arranged to trim a convex exterior portion of a heel adjacent to a slot formed in said port-ion of the heel as the cutter and the heel are moved relatively to each other, and axially arranged gages positioned at opposite sides of the cutter, said gages being constructed and arranged to engage said portion of the heel for positioning the same relatively to the cutter during the trimming operation.

5. A trimming machine having, in combination, a rotary cutter having cutting edges constructed and arranged to chamfer exterior portions of a heel adjacent to a side of a slot formed in the heel as the cutter and the heel are moved relatively to each other, and a gage having a face overlapping axially of the cutter a portion of each of the cutting edges of the cutter and constructed and ar ranged to engage the heel within the slot, said gage being constructed and arranged to position the heel relatively to the cutter during the chamfering operation.

6. A trimming machine having, in combination, a rotary cutter having a cutting edge constructed and arranged to trim portions of the breast of a heel along a side of a slot formed in the breast of the heel as the cutter and the heel are moved relatively to each other, and a gage comprising a portion shaped to engage the heel within the slot and positioned in axial overlapping relation with the cutting edge of the cutter, said gage being constructed and arranged to position the heel relatively to the cutter during the trimming operation.

7. A trimming machine having, in combination, a rotary cutter comprising one or more cutting edges for trimming portions of the breast of a heei along aside of the entrance portion of a slot formed in the breast of the heel the heel is moved relatively to the cutter, and a gage arranged in concentric relation with and overlapping the cutting edges axially of the cutter and comprising a portion constructed and arranged to engage the heel Within the slot, said gage being constructed and arranged to position the heel relatively to the cutter during the trimming operation.

8. In a trimming machine, a cutter having a cutting edge included in a conical surface and constructed and arranged to chamfer an exterior portion of the breast of a heel along a side of'a slot formed in the breast of the heel as the cutter and the heel are moved relatively to each other, and a' gage shaped and arranged to overlap a portion of the cutting edge of the cutter and serving to engage the'heel for positioning the same relatively to the cutter during the trimming operation.

9. A trimming machine having, in combination, a cutter for removing material from the breast of a heel adjacent to'the entrance portion ofa heel-cover-receiving slot formed in the breast of the heel, and a housing constructed and arranged to include an effective portion of the cutter and comprising gage surfaces shaped and arranged to engagethe breastof the heel and a side of the slot respectively for positioning the heel relatively to the cutter during the trimming operation.

10. A machine for operating upon heels having, in combination, a cutter for chamfering portions of the breast of-a'heel along a side of a channel formed in the breast of the heel as the heel is moved relatively to the cutter, and a housing arranged in overlapping relation With reference to the cutterand constructed and arranged to engage aside of said channel and the breast of the heei'foipositioning the heel relatively to the cutter during the heel-chamfering operation.

11. A trimming machine having, incombination, a rotary cutter for chamferingportions of the breast of a heel along a side of a heel-cover-receiving channel formed in the breast of a heel as the heel is moved past the cutter, and an arcuate housing constructed and arranged to include an effective portion of the cutt'erand comprising gage surfaces for engaging the heel to position the same relatively to the cutter.

12. A 'machine for operating upon heels having, in combination, a rotary cutter for trimming portions of thebreast of a heel along a side ofa channel formed in the breast of the heel as the heel is moved past the cutter, and an arcuate housing arranged in overlapping relation With reference to the gage axially of the cutter and comprising surfaces for engaging a side of the channel and the breast of the heel to position the heel relatively to the cutter during thetrimming operation.

13. A trimming machinehaving, in combination, a cutter for chamfering the breast of a heel adjacent to a 'heel-cover-recei'ving channel'formed in the breastof the heel as the heel and the cutter are moved relatively to each other, and a housing arranged in overlapping rela-tion wlth'reference to the gage and comprisingga'ge surfaces forengaging the heel to position the same relatively to the'cu'tt'er, said housing-being mounted for adjustment relatively to the cutter for varying the depth of the'chamfering cut inthe breast of the heel.

14. A machine for operating upon heels having, incombination, a cutter for trimming portions'of the breast of a heel along'th-e side of a channel fornied in the breast of the heel as the cutter and" the heel are-moved relativelyto each other, and-a housing arranged in overlapping relation with reference to the gage and comprising surfaces for engaging aside of said channel and the breast-of the heel to position the heel relatively to the cutter during the trimming operation, saidhousing heingin'ounted for adjustment relatively to the cutterfor varying the depth of the trimming cut in the breast of the heel;

1 5 A trimining machine having,-in conI- b i-nation, a rotary cutter for 'chamfering portions of the breast of a heel-adjacentto a heelcover-receiving channel formed in the breast of the heel and anjarcuate housing constructed and arranged to include-an effective portion of the cutter and comprising gage surfacesarr anged to engage 'theheel for positionin-gthe same relatively to the cuttensaid housing being 'pivotally mounted for movement substantially-inthe plane of rotation of 5 the cutter for usting "the gaging surfaces relatively to the cutter to vary the amount of the material removed from the heel duringth'e chamfering operation.

16;. A machine for operating upon heels having, in combination, arotary cutter for trimming portions 'of the breast of-a-Eheel along aside of a channel formed in the breast of theiheel as the heel-is moved past the cutter, and an arcuate housing arranged in overlapping frelation with reference to the gage axially of the cutter and comprising surfaces for engaging a side of said channel and-the breast of the heel for positioning the heel relatively to the cutter duringthetrimming operation, said gage beingpivotal-ly mounted for movement substantially in thepl a-nebf rotation of thecu'tter for adjusting the gaging surfaces relativelyto the cutter to vary the amount of the material removed from the heel during-the trimming operation.

17. Am-ach ine ef thecla'ss described having, in combinationja cutte'rconst-ructed and arranged to chainfenfrom a shoe part material included betvveen a convex face of the shoe par-tend aslot formed in said face as the cutter andtheshoe part are moved 'rela-, tively to each other, anda gage comprising a face for engaging the shoe part Within the slot, said gage being constructed and "arranged to position the shoe part relatively to the cutter during the trimming operation and being mounted for adjustment relatively to the shoe part'to vary the amount of material removed from the shoe part during the chamfering operatlon.

18. A machine of the class descrlbed having, in combination, a cutter for chamfering a portion of a shoe part adjacent to aslot formed in the shoe part, and a gage having surfaces arranged to engage a surface of the shoe part and a side Wall of said slot respectively for guiding the shoe part past the cutter to perform the chamfering operation, said gage being constructed and arranged for adjustment relatively to the cutter to vary the depth of the chamfering cut.

19. A machine for operating upon heels having, in combination, a cutter constructed and arranged to chamfer from a heel material included. between a convex portion of the heel and a slot formed in said portion, and a gage comprising a face shaped for engaging the heel Within the slot, said gage being constructed and arranged to position the heel relatively to the cutter during the trimming operation and being mounted for adjustment relatively to the cutter for varying the amount of the material removed from the heel during the chamfering operation.

20. A machine for operating upon heels having, in combination, a rotary cutter for chamfering a portion of a heel adjacent to a slot formed along a convex portion of the heel, and a gage having surfaces arranged to engage a surface of the heel and a side Wall of said slot for guiding the heel past the cutto perform the chamfering operation, said gage being constructed and arran ed for adjustment relatively to the cutter to vary the depth of the chamfering cut.

21. A machine for operating upon heels having, in combination, a cutter constructed and arranged to chamfer a projecting portion of a breast of a Louis heel adjacent to a slot formed in said portion of the heel, and gages positioned adjacent to the cutter and at opposite sides thereof constructed and arranged to engage respectively the projecting portion of the breast of the heel and a side of the slot to position the heel relatively to the cutter for chamfering said projecting portion as the heel is moved past the cutter.

22. A machine for operating upon heels having, in combination, a cutter for chamfering the upper marginal parts of the portion of a heel included between heel-cover-receiving channels formed in the breast of the heel and extending lieightivise thereof, and gages spaced from each other and constructed and a ranged to engage the breast of the heel and a side of one of the channels respectively, for guiding the heel past the cutter to perform the chamfering operation.

23. A machine for operating upon heels having, in combination, a rotary cutter having its cutting edge arranged in a conical surface for chamf-ering the upper marginal parts of the projecting portion of a heel included between heel-cover-receiving channels formed in the breast of a heel and extending heightivise thereof, and gages constructed and arranged to engage the breast of the heel and a side of one of the channels respectively for guiding the heel past the cutter to perform the chamfering operation.

24. A machine for operating upon heels having, in combination, a rotary cutter for chamfering the upper marginal parts of the projecting portion of a heel included between heel-cover-receiving channels formed in the breast of the heel and extending heightwise thereof, and gages positioned on opposite sides of the cutter and constructed and arranged to enga e a breast and one of the sides of the channel respectively for guiding the heel past the cutter to perform the chamfering operation.

25. A machine for operating upon heels having, in combination, a rotary cutter for trimming portions of a heel adjacent to a channel formed in the heel as the cutter and the heel are moved relatively to each other, and gages arranged axially of the cutter and at opposite ends of an effective cutting edge of the cutter constructed and arranged to engage a surface of the heel and the heel Within the channel respectively, each of said gages being adjustable relatively to the cutter for varying the depth of the trimming cut.

26. A machine for operating upon heels having, in combination, a rotary cutter for trimming portions of a heel adjacent to a channel formed in the heel as the cutter and the heel are moved relatively to each other, and gages arranged axially of the cutter and at opposite ends of an effective cutting edge of the cutter constructed and arranged to engage the breast of the heel and the heel Within the channel respectively, each of the gages being adjustable relatively to the cutter and also being adjustable relatively to each other for varying the depth of the trimming cut.

27. A machine for operating upon heels having, in combination, a cutter for chamfering a portion of a heel adjacent to a channel formed along a convex portion of the heel, a gage having surfaces arranged to engage a surface of the heel. and a side Wall of said channel respectively, and another gage spaced from the first-named gage for engaging said surface of the heel, said gages being constructed and arranged to guide the heel past the cutter to perform the chamfering operation.

'28. A machine for operating upon heels having, in combination, a cutter for chamfcring a portion of a heel adjacent to a channel formed along a convex portion of the heel, a gage having surfaces arranged to engage a surface of the heel and a side Wall of said channel respectively, and another gage spaced from the first-named gage for engagthe same relatively to the cutter to perform I the chamfering operation, said housing being constructed and arranged for adjustment relatively to the cutter to vary the depth of the chamfering cut.

30. A machine for operating upon shoes having, in combination, a rotary cutter for chamfering a portion of the breast of a heel adjacent to a channel formed along a convex. portion of the breast of the heel, and a housing arranged in overlapping relation With reference to the gage axially of the cutter and having surfaces arranged to engage the heel to position the same relatively to the cutter to perform thechamfering operation, said housing being constructed and arranged for adjustment relatively to the cutter to vary the depth of the chamfering cut.

31. A machine for operating upon heels having, in combination, a rotary cutter having the general shape of a frustrum of a cone and comprising cutting edges positioned in asurface of the cone, a gaging face lying Within an extension of the conical surface and positioned axially of and adjacent to the cutter, and a gaging member positioned adjacent to and arranged to overlap the cutting edges of the cutter, said face and said member being constructed and arranged to engage the breast of a Louis heel having a slot formed in its breast and to engage a side of the slot, thereby to guide the heel past the cutter to chamfer the breast of the heel along the slot upon relative movement of the heel and the cutter.

32. A machine for operating upon heels having, in combination, a rotary cutter having the general shape of a frustrum of a cone and comprising cutting edges positioned in a surface of the cone, a gaging face lying Within an extension of the conical surface and positioned axially of and adjacent to the cutter, and a gaging member positioned adjacent to and arranged to overlap the cutting edges of the cutter, said face and said member being-mounted for adjustment radially of the cutter to vary the amount of material to be trimmed from the heel and being constructed and arranged to engage the breast of a Louis heel having a slot formed in its breast and to engage a side of the slot, thereby to guide the heel past the cutter to chamfer the breast of the heel along the slot as the heel is moved past the cutter.

In testimony whereof I have signed my 1 name to this specification.

NORVVOOD H. KNOWLTON. 

